<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>城市三级联动</title>
</head>
<body>
	<label>三级联动</label>
	<div>
        <select  id="allProvince">
            <option value="">请选择省份</option>
        </select>
        <select  id="allCity" >
            <option value="">请选择城市</option>
        </select>
        <select  id="allDistrict">
            <option value="">请选择区县</option>
        </select>             
	</div>
	
<script src="http://cdn.bootcss.com/jquery/2.0.1/jquery.js"></script>
<script src="allcity.js"></script>
<script src="citychange.js"></script>
<script>
	$(function(){cityChange('allProvince','allCity','allDistrict');})
</script>
</body>
</html>